Use global probability of users connecting

src/config.rs

@@ -28,6 +28,7 @@ pub struct Config {
     pub prob_connection_fails: f64,
     // If the connection fails, retry how many times?
     pub num_connection_retries: u32,
+    pub prob_user_connects: f64,
     pub prob_user_invites_friend: f64,
     pub prob_user_submits_reports: f64,
     pub prob_user_treats_throttling_as_blocking: f64,

src/main.rs

@@ -56,6 +56,7 @@ pub struct Config {
     pub one_positive_report_per_cred: bool,
     pub prob_censor_gets_invite: f64,
     pub prob_connection_fails: f64,
+    pub prob_user_connects: f64,
     pub prob_user_invites_friend: f64,
     pub prob_user_submits_reports: f64,
     pub prob_user_treats_throttling_as_blocking: f64,
@@ -103,6 +104,7 @@ pub async fn main() {
         one_positive_report_per_cred: config.one_positive_report_per_cred,
         prob_censor_gets_invite: config.prob_censor_gets_invite,
         prob_connection_fails: config.prob_connection_fails,
+        prob_user_connects: config.prob_user_connects,
         prob_user_invites_friend: config.prob_user_invites_friend,
         prob_user_submits_reports: config.prob_user_submits_reports,
         prob_user_treats_throttling_as_blocking: config.prob_user_treats_throttling_as_blocking,

src/user.rs

@@ -59,7 +59,10 @@ pub struct User {
     // Does the user submit reports to Troll Patrol?
     submits_reports: bool,
 
-    // How likely is this user to use bridges on a given day?
+    // How likely is this user to use bridges on a given day? This has
+    // been converted to a global parameter (prob_user_connects), but we
+    // still leave the user implementation for now in case we want to
+    // switch back to it.
     prob_use_bridges: f64,
 
     // If the censor implements partial blocking, is the user blocked?
@@ -90,8 +93,8 @@ impl User {
         let (prob_use_bridges, submits_reports) = if is_censor {
             (0.0, false)
         } else {
-            let mut rng = rand::thread_rng();
-            let prob_use_bridges = rng.gen_range(0.0..=1.0);
+            // Use global value
+            let prob_use_bridges = config.prob_user_connects;
             let submits_reports = event_happens(config.prob_user_submits_reports);
             (prob_use_bridges, submits_reports)
         };
@@ -198,8 +201,8 @@ impl User {
         let (prob_use_bridges, submits_reports) = if is_censor {
             (0.0, false)
         } else {
-            let mut rng = rand::thread_rng();
-            let prob_use_bridges = rng.gen_range(0.0..=1.0);
+            // Use global value
+            let prob_use_bridges = config.prob_user_connects;
             let submits_reports = event_happens(config.prob_user_submits_reports);
             (prob_use_bridges, submits_reports)
         };